feat: 更新记忆面板样式，确保面板在打开时占满高度

web/src/App.tsx

@@ -575,7 +575,7 @@ function App() {
 
         {/* Right Sidebar - Memory Panel (collapsible) */}
         <div className={`shrink-0 border-l border-[var(--border-color)] bg-[var(--bg-secondary)]/50 transition-all duration-300 ease-out overflow-hidden ${memoryPanelOpen ? 'w-80' : 'w-0 border-l-0'}`}>
-          <div className={`w-80 ${memoryPanelOpen ? '' : 'invisible'}`}>
+          <div className={`w-80 h-full ${memoryPanelOpen ? '' : 'invisible'}`}>
             <MemoryPanel
               memories={memories}
               onRefresh={handleRefreshMemories}